Troubleshooting - comfortel DECT 650C Bedienungsanleitung

T
ROUBLESHOOTING
Symptom
The handset doesn't switch on
Handset works, but doesn't
access the base unit
Handset works and access the
base unit, but no dial tone is
heard.
Handset works perfectly, but
the number are not dialed to
the line.
Handset works perfectly, but
you hear a beep during the
phone calls
Noise and audio interferences
on your phone calls
Handset works perfectly, but
doesn't ring with incoming calls.
Handset can only receive calls.
Keypad locked.
The phone doesn't dial certain
numbers
Phone doesn't work properly
with some special services or if
connected to an exchange
extension (PABX).
Battery duty is very low
Logical malfunctioning in the
handset or base unit
Cannot send and/or receive
SMS messages, or SMS Mes-
sages are received just as
voice messages.
Possible cause
Batteries discharged or not (well)
installed.
Batteries damaged or not suitable
Faulty handset
No power connection in the base
unit
Handset not registered to the base
unit or lost of registration
Wrong connection of the phone line
cord
You have set the dual tone multi fre-
quency system (DTMF), but your
line doesn't support it.
Batteries near to be fully discharged Check the battery charge and charge it if nec-
Handset too far from the base
Ring volume level set to OFF
You have disabled the keypad lock
function.
Outgoing calls barring function acti-
vated
Flash time not properly set.
You regularly charged the batteries
with more than one bar
Charging contacts not clean
Battery life reached the end
AC power supply noise or electro-
static spikes could temporarily
altered the internal memory
Faulty handset or base unit
Call barring is on.
Other SMS phones connected to
the line.
Service centers are not (properly)
set

Troubleshooting

Solution
Try charging the handset for few minutes, then
remove it from the base. If it still doesn't switch
on, check the battery installation (ref.
Installing the Batteries on page
If you already did the above stated operation
unsuccessfully, try replacing the batteries
Contact an authorized service centre
Check the connection of the AC power adaptor
(ref. chapter Connections on page
Try registering the handset to the base (ref.
chapter Setting Display on page
Check the connection of the line cord (ref.
chapter Connections on page
Try selecting the pulse dial (ref.
ing the Dial Mode on page
essary (ref. chapter Battery Checking and Han-
dling on page 85 and chapter Charging the
Handset Batteries on page
Get closer to the base unit. If you can access
more base units, try selecting a closer one
(chapter Base Selection on page
Select another ring level (ref.
Ring Type on page 123)
Try by keeping pressed the star key (ref.
ter Paging on page 103).
Check the call barring function and change it if
necessary (ref. chapter Barring Outgoing Calls
on page 132).
Check the Flash time and set it properly (ref.
chapter Setting the Area Code on page
Try performing the operation described at
ter Restoring the Battery Duty on page 85
Clean them as described in
on page 87
Replace the batteries
Try resetting the handset or the base (ref.
ter Resetting the Handset or the Base on
page 135)
Contact an authorized service centre
Set it to off (ref chapter Barring Outgoing Calls
on page 132)
Disconnect the other phones.
Set/check the SMS service centers (ref.
Setting Service Center Number on page
145
chapter
89).
89)
127)
89)
chapter Choos-
91)
90)
136).
chapter Selecting
chap-
131).
chap-
chapter Cleaning
chap-
chapter
116)